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Lincoln Electric PRO-CUT 55 SVM140-A Service Manual page 112

Lincoln electric welding system user manual
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G-5
PC BOARD ASSEMBLY-DISPLAY
c C C C C C C C
LED9
C
C
C C C C
LED8
0
0
NOTE:
Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro-
vided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the
machine.
COMPONENT SIDE
OPPOSITE COMPONENT SIDE
CIRCUITRY MULTIPLE
c C C C C C C C
c C C C C C C C
c C C C C C C C
C
LED6
LED5
LED3
C
c
C
C
C
c
C
C
C
c
C
C
C
c
C
C
C
C
C
C
c
c C C C
C C C C
C C C C
C C C C
LED1
C
C
LED7
LED4
LED2
C
C
D
d
B
b
b
A
RA
A
RA
J40
L10721-1
BLANK PART NO. L10721-A
MAKE FROM S19399
(MAKES 24 BOARDS)
NOTE: BLANK SHEARING TOLERANCE SEE P.C. BOARD ASSEMBLY
1.10
1.65~.04
LED9
LED6
Q4
1.00
LED8
LED7
R14
Q1
Q2
Q3
0
0
2
N.D.
N.C.
ELECTRICAL DIAGRAMS
CIRCUITRY MULTIPLE
C
C
C
C
C
C
c
C
C
C
C
C
C
C
c
C
C
C
C
C
C
C
c
C
C
C
C
C
C
C
c
c C C C
C
c C C C
c C C C
c C C C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
B
d
D
C
C
DISPLAY
0
0
1
N.A.
N.C.
(3 PLACES)
4.00
1.40
LED5
LED3
R20
LED4
LED2
LED1
DZ1
J40
.20
L10721-1
4.50~.04
4.30
3
N.C.
NOTES:
N.A. DO NOT COAT.
N.B. DO NOT COAT VIEWING LENS WITH
N.C. COAT WITH ITEM 3 COMPONENT SIDE AFTER ENCAPSULATION.
N.D. HEIGHT OF RTV AND COMPONENTS NOT TO EXCEED .36".
N.F. COAT WITH ITEM 3 ALL TRACES AND SOLDER CONNECTIONS ON
NON-COMPONENT SIDE OF BOARD PRIOR TO ENCAPSUATION.
ITEM
QTY.
PART No.
IDENTIFICATION
C1,C2,C3,C4
4
S16668-4
2700pF/50
C5
1
S13490-25
4.7/35
DZ1
1
T12702-27
1N4740
LED1
1
M18875-1
LIGHT BAR,LED,YELLOW
N.B.
N.B.
LED2,LED7
2
M18875-5
LIGHT BAR,LED,RED
LED3,LED6
2
M18875-2
LIGHT BAR,LED,RED
N.B.
LED4
1
M18875-6
LIGHT BAR,LED,YELLOW
N.B.
LED5
1
M18875-3
LIGHT BAR,LED,YELLOW
N.B.
N.B.
LED8
1
M18875-7
LIGHT BAR,LED,GREEN
LED9
1
M18875-4
LIGHT BAR,LED,GREEN
N.B.
Q1,Q2,Q3,Q4
4
T12704-68
2N4401
R1,R5,R9,R13
4
S19400-3321
3.32K 1/4W
R2,R6,R10,R14
4
S19400-6811
6.81K 1/4W
R3,R4,R7,R8,R11,R12
6
S19400-1000
100 1/4W
R15,R16
2
S19400-75R0
75 1/4W
R17
1
S19400-8250
825 1/4W
R18,R19
2
S19400-2671
2.67K 1/4W
R20
1
S19400-2430
243 1/4W
REQ'D
ITEM
PART NO.
IDENTIFICATION
1
1
SEE BLANK
P.C. BOARD BLANK
2
1
S19365-15
RIGHT ANGLE HEADER
3
3 oz
E2861
SEALANT
CAPACITORS = MFD/VOLTS
INDUCTANCE = HENRYS
MANUFACTURED AS:
L10721-1A0
IDENTIFICATION CODE
MAKE PER E1911
ENCAPSULATE WITH E1844
TEST PER E3733-D
ENCAPSULATION MATERIAL.
G-5
CAD
PROCUT 55
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